CN109586036B - Antenna structure and wireless communication terminal - Google Patents
Antenna structure and wireless communication terminal Download PDFInfo
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- CN109586036B CN109586036B CN201811636194.9A CN201811636194A CN109586036B CN 109586036 B CN109586036 B CN 109586036B CN 201811636194 A CN201811636194 A CN 201811636194A CN 109586036 B CN109586036 B CN 109586036B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2258—Supports; Mounting means by structural association with other equipment or articles used with computer equipment
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
- H01Q5/28—Arrangements for establishing polarisation or beam width over two or more different wavebands
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/335—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors at the feed, e.g. for impedance matching
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
Abstract
The invention provides an antenna structure and a wireless communication terminal, wherein the antenna structure comprises: the antenna comprises a first antenna radiating body, a second antenna radiating body, a tuning circuit and a signal source; the first antenna radiator and the second antenna radiator are coupled through a gap, one end, far away from the gap, of the first antenna radiator is grounded, one end, far away from the gap, of the second antenna radiator is grounded, and a feeding point is arranged on the second antenna radiator; the first end of the tuning circuit is connected with the feeding point, and the second end of the tuning circuit is connected with the first end of the signal source; the second end of the signal source is grounded; the antenna structure is used for simultaneously generating a first resonance, a second resonance, a third resonance and a fourth resonance. Thus, four resonances can be generated by one slot to cover a plurality of wireless communication frequency bands.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an antenna structure and a wireless communication terminal.
Background
With the rapid development of terminal technology, wireless communication terminals have become an essential tool in people's life, and bring great convenience to various aspects of users' life. A wireless communication terminal needs to cover a plurality of wireless communication frequency bands, so that a plurality of antennas need to be installed or one antenna covers a plurality of frequency bands. In the prior art, as a wireless communication terminal with a metal frame which is popular recently, an antenna is arranged on the metal frame, and designing a plurality of antennas means increasing the number of broken seams of the antenna, which results in a complex structure of the wireless communication terminal.
Disclosure of Invention
The embodiment of the invention provides an antenna structure and a wireless communication terminal, and aims to solve the problem that the structure of the wireless communication terminal is complex because a plurality of cracks are required to be arranged on the wireless communication terminal to excite a plurality of resonances in the antenna design of the wireless communication terminal.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides an antenna structure, including: the antenna comprises a first antenna radiating body, a second antenna radiating body, a tuning circuit and a signal source;
the first antenna radiator and the second antenna radiator are coupled through a gap, one end, far away from the gap, of the first antenna radiator is grounded, one end, far away from the gap, of the second antenna radiator is grounded, and a feeding point is arranged on the second antenna radiator;
the first end of the tuning circuit is connected with the feeding point, and the second end of the tuning circuit is connected with the first end of the signal source;
the second end of the signal source is grounded;
the antenna structure is used for simultaneously generating a first resonance, a second resonance, a third resonance and a fourth resonance.
In a second aspect, an embodiment of the present invention further provides a wireless communication terminal, including the antenna structure.
An antenna structure according to an embodiment of the present invention includes: the antenna comprises a first antenna radiating body, a second antenna radiating body, a tuning circuit and a signal source; the first antenna radiator and the second antenna radiator are coupled through a gap, one end, far away from the gap, of the first antenna radiator is grounded, one end, far away from the gap, of the second antenna radiator is grounded, and a feeding point is arranged on the second antenna radiator; the first end of the tuning circuit is connected with the feeding point, and the second end of the tuning circuit is connected with the first end of the signal source; the second end of the signal source is grounded; the antenna structure is used for simultaneously generating a first resonance, a second resonance, a third resonance and a fourth resonance. Therefore, four resonances can be generated in one gap, the number of the open and close gaps is reduced, the antenna structure is simplified, and the appearance attractiveness of the wireless communication terminal is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an antenna structure according to an embodiment of the present invention;
fig. 2 is a second schematic structural diagram of an antenna structure according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating simulation results provided by an embodiment of the present invention;
fig. 4 is a third schematic structural diagram of an antenna structure according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an antenna structure according to an embodiment of the present invention, and as shown in fig. 1, the antenna structure includes a first antenna radiator 1, a second antenna radiator 2, a tuning circuit 3, and a signal source 4; the first antenna radiator 1 and the second antenna radiator 2 are coupled through a gap, one end, far away from the gap, of the first antenna radiator 1 is grounded, one end, far away from the gap, of the second antenna radiator 2 is grounded, and a feeding point 21 is arranged on the second antenna radiator 2; a first end of the tuning circuit 3 is connected to the feeding point 21, and a second end of the tuning circuit 3 is connected to a first end of the signal source 4; the second end of the signal source 4 is grounded; the antenna structure is used for simultaneously generating a first resonance, a second resonance, a third resonance and a fourth resonance.
In this embodiment, the first antenna radiator 1 may include a first end 11 and a second end 12, where the first end 11 may be an end far away from the slot, the first end 11 is grounded, and the second end 12 is an end close to the slot. The second antenna radiator 2 may comprise a first end 22 and a second end 23, the first end 22 may be the end far from the slot, the first end 22 is grounded, and the second end 23 is the end near the slot.
In this embodiment, the first antenna radiator 1 and the second antenna radiator 2 are made of a metal conductive material, and may be made of common FPC, PDS, and LDS materials. The first antenna radiator 1 and the second antenna radiator 2 may also be part of a metal middle frame or a metal back cover. The feed point 21 is an access point for the signal source 4. The gap, which may be air or filled with a non-conductive plastic material, is located between the first antenna radiator 1 and the second antenna radiator 2. A coupling capacitance is present between the second end 12 of the first antenna radiator 1 and the second end 23 of the second antenna radiator 2, and the size of the coupling capacitance is mainly related to the area of the end surfaces of the second end 12 and the second end 23, the width of the slot, and the dielectric constant of the non-conductive plastic material filled in the slot.
In this embodiment, a slot of the metal middle frame appearance wireless communication terminal can be fully utilized to excite four resonance modes simultaneously, and a combination of at least four frequency bands can be realized on the same antenna structure, such as a combination of a GPS L5, a medium-high frequency (1710-2690 MHz) and a 5G N79 antenna of a sub6-G wireless communication terminal. The antenna performance requirement is met, the total number of the antenna and the gaps can be reduced, the structural space occupied by the total feed network (including a radio frequency feeder, a test seat, a matching network, a feed spring structure and the like) is favorably reduced, and meanwhile, the reduction of the number of the gaps is also favorable for improving the structural strength and meeting the overall product requirement of simple appearance.
Optionally, the tuning circuit 3 includes a capacitor C, a first inductor L1, and a second inductor L2;
a first end of the capacitor C is connected to the feeding point 21, and a second end of the capacitor C is connected to a first end of the first inductor L1;
the second end of the first inductor L1 is connected to the first end of the signal source 4;
the first end of the second inductor L2 is connected to the second end of the first inductor L1, and the second end of the second inductor L2 is grounded.
For better understanding of the above arrangement, please refer to fig. 2, and fig. 2 is a schematic structural diagram of an antenna structure according to an embodiment of the present invention. As shown in fig. 2, a first end of the capacitor C is connected to the feeding point 21, and a second end of the capacitor C is connected to a first end of the first inductor L1; the second end of the first inductor L1 is connected to the first end of the signal source 4; the first end of the second inductor L2 is connected to the second end of the first inductor L1, and the second end of the second inductor L2 is grounded. Besides this implementation, the capacitor C of the tuning circuit 3 may be replaced by a plurality of capacitors connected in parallel, and the first inductor L1 or the second inductor L2 may be replaced by a plurality of inductors connected in series, which is not limited to this embodiment.
In this embodiment, the part of the second antenna radiator 2 between the feed point 21 and the first end 22 and the capacitor C excite the first resonance, which may cover the frequency band of the GPS L5 (frequency band at 1176 MHz), and the longer the distance between the feed point 21 and the first end 22, the larger the value of the capacitor C may be, and the lower the frequency of the first resonance may be. In general, the length between the feeding point 21 and the first end 22 may be 5-10 mm, and a typical value may be 9 mm.
In this embodiment the section between the feed point 21 and the second end 23 of the second antenna radiator 2 generates a second resonance, which may cover the B3 and B1 bands (1805 MHz-2170 MHz), and the length between the feed point 21 and the second end 23 may typically be 16 mm.
In this embodiment, the first antenna radiator 1 and the coupling capacitor generate a third resonance, and the length of the first antenna radiator 1 may be 12 to 15mm, and may be typically 14 mm. The third resonance can cover B40 and B7 frequency bands (2300 MHz-2690 MHz).
In this embodiment, the high-order mode of the loop formed by grounding the first end 22 and the portion between the feed point 21 and the first end 22 of the second antenna radiator 2 generates the fourth resonance covering the n79 band (4800MHz to 5000 MHz). The impedance of the antenna is closer to 50 ohms due to the first inductor L1 and the second inductor L2, the antenna can be better matched with the signal source 4, reflection loss is reduced, and the radiation efficiency of the antenna is improved.
In this embodiment, by controlling the position of the feeding point 21 and the specific matching network, four resonance modes can be excited simultaneously. The tuning law is as follows: the length between the feeding point 21 and the second end 23 mainly controls the second resonance, which is shifted towards lower frequencies the longer the length between the feeding point 21 and the second end 23. The length between the feeding point 21 and the first end 22 mainly controls the first resonance, and the longer the length between the feeding point 21 and the first end 22, the lower the frequency shift of the first resonance. The capacitor C also controls the first resonance, and the larger the value of the capacitor C, the lower the frequency shift of the first resonance. The value of the capacitor C is typically between 0.8pF and 1.5 pF. The first antenna radiator 1 and the coupling capacitor generate a third resonance, and the longer the first antenna radiator 1 is, the smaller the slot width is, and the lower the third resonance is.
Referring to fig. 3 again, fig. 3 is a schematic diagram of simulation results according to an embodiment of the present invention. As shown in fig. 3, a denotes a first resonance, B denotes a second resonance, C denotes a third resonance, and D denotes the second resonance.
In this embodiment, four antenna resonances can be excited by fully utilizing 1 antenna slot on a wireless communication terminal (such as a 5G wireless communication terminal), and antenna combinations of at least four different functional frequency bands, such as GPS L5, medium-high frequency and N79, or GPS L2(1227MHz), medium-high frequency and N79, can be realized and can exist simultaneously. The performance is realized, the total number of antenna gaps of the whole machine is reduced, the occupied structural space of a plurality of feed networks (including radio frequency feeder lines, test seats, matching networks, feed spring plate structures and the like) is saved, and meanwhile, the reduction of the number of the gaps is also beneficial to improving the structural strength and meeting the overall product requirement of simple appearance, so that the competitiveness of products is improved.
Optionally, the capacitor C is a variable capacitor.
For better understanding of the above arrangement, please refer to fig. 4, and fig. 4 is a schematic structural diagram of an antenna structure according to an embodiment of the present invention. As shown in fig. 4, the capacitor C is a variable capacitor. In this way, by adjusting the length between the feeding point 21 and the first end 22 and the capacitance value of the capacitor C, the longer the length between the feeding point 21 and the first end 22, the larger the capacitance value of the capacitor C, and the lower the frequency shift of the first resonance, the resonance frequency of the first resonance can be made to be a low frequency (including B17, B20, B5, and B8), and a frequency band combination of low and medium-high frequencies can be satisfied. Moreover, the antenna design with reconfigurable frequency can be realized, the antenna can be positioned at the two side edges of a wireless communication terminal (such as a mobile phone), a new antenna space is opened up, and the antenna is positioned at the side edge of the wireless communication terminal, so that the influence of hands on the radiation efficiency of the antenna can be effectively reduced.
In the implementation mode, the total number of antenna gaps of the whole machine can be reduced, the structural space occupied by a plurality of feed networks (including radio frequency feeder lines, test seats, matching networks, feed spring plate structures and the like) is saved, and meanwhile, the reduction of the number of the gaps is also beneficial to improving the structural strength and meeting the overall product requirement of simple appearance, so that the product competitiveness is improved.
Optionally, the first resonance is excited by the metal arm between the first end 22 of the second antenna radiator 2 and the feed point 21 and the capacitance C; the second resonance is excited by the metal arm between the second end 23 of the second antenna radiator 2 and the feed point 21; the third resonance is excited by the first antenna radiator 1 and the slot; the fourth resonance is excited by a metal arm between the first end 22 of the second antenna radiator 2 and the feeding point 21, where the first end 22 is a grounded end of the second antenna radiator 2, and the second end 23 is an end of the second antenna radiator 2 close to the slot.
In this embodiment, the first resonance is excited by the metal arm between the first end 22 of the second antenna radiator 2 and the feed point 21 and the capacitance C; the second resonance is excited by the metal arm between the second end 23 of the second antenna radiator 2 and the feed point 21; the third resonance is excited by the first antenna radiator 1 and the slot; the fourth resonance is excited by a metal arm between the first end 22 of the second antenna radiator 2 and the feeding point 21, where the first end 22 is a grounded end of the second antenna radiator 2, and the second end 23 is an end of the second antenna radiator 2 close to the slot. Thus, four resonances can be generated by one slot, simplifying the antenna structure. When the antenna structure is arranged on the metal frame, the structural strength is also improved.
Optionally, the length of the metal arm between the first end 22 of the second antenna radiator 2 and the feeding point 21 is in an inverse correlation with the resonant frequency of the first resonance, and the capacitance value of the capacitor C is in an inverse correlation with the resonant frequency of the first resonance.
In this embodiment, the length of the metal arm between the first end 22 of the second antenna radiator 2 and the feed point 21 is inversely related to the resonant frequency of the first resonance, and the longer the length of the metal arm between the first end 22 of the second antenna radiator 2 and the feed point 21, the smaller the resonant frequency of the first resonance.
In this embodiment, the capacitance value of the capacitor C is inversely related to the resonant frequency of the first resonance, and the larger the capacitance value of the capacitor C is, the smaller the resonant frequency of the first resonance is. In this way, by setting the length of the metal arm between the first end 22 of the second antenna radiator 2 and the feed point 21, or controlling the capacitance, the resonant frequency of the first resonance can be made low (including B17, B20, B5 and B8), and a combination of low and medium-high frequency bands can be satisfied.
Optionally, the resonant frequency of the first resonance is smaller than the resonant frequency of the second resonance, the resonant frequency of the second resonance is smaller than the resonant frequency of the third resonance, and the resonant frequency of the third resonance is smaller than the resonant frequency of the fourth resonance.
In this embodiment, the resonance frequency of the first resonance is lower than the resonance frequency of the second resonance, the resonance frequency of the second resonance is lower than the resonance frequency of the third resonance, and the resonance frequency of the third resonance is lower than the resonance frequency of the fourth resonance.
Optionally, the resonant frequency of the first resonance is 1176MHz, the resonant frequency band of the second resonance is 1805MHz to 2170MHz, the resonant frequency band of the third resonance is 2300MHz to 2690MHz, and the resonant frequency band of the fourth resonance is 4800MHz to 5000 MHz.
In this embodiment, the resonant frequency of the first resonance is 1176MHz, the resonant frequency band of the second resonance is 1805MHz to 2170MHz, the resonant frequency band of the third resonance is 2300MHz to 2690MHz, and the resonant frequency band of the fourth resonance is 4800MHz to 5000MHz, so that a plurality of different frequency bands can be covered, and the radiation performance of the antenna can be improved.
Optionally, the length of the first antenna radiator 1 is 12-15 mm.
In this embodiment, the length of the first antenna radiator 1 is 12 to 15mm, and a typical value may be 14 mm. The length of the first antenna radiator 1 may be determined by the resonant frequency band of the third resonance.
Optionally, the length between the feeding point 21 and the first end 22 of the second antenna radiator 2 is 5-10 mm, and the length between the feeding point 21 and the second end 23 of the second antenna radiator 2 is 16mm, where the first end 22 is the grounded end of the second antenna radiator, and the second end 23 is the end of the second antenna radiator 2 close to the slot.
In this embodiment, the length between the feeding point 21 and the first end 22 of the second antenna radiator 2 is 5-10 mm, and may be 9mm as a typical value, which may be determined by the resonant frequency band of the first resonance. The length between the feeding point 21 and the second end 23 of the second antenna radiator 2 is 16mm, which may be determined by the resonance frequency band of the second resonance.
Optionally, the capacitor C is 0.8pF to 1.5pF in size.
In this embodiment, the capacitor C has a size of 0.8pF to 1.5pF, and may be determined by a resonance frequency band of the first resonance.
Optionally, the gap is filled with a non-conductive plastic material.
In this embodiment, the gap is filled with a non-conductive plastic material, which can improve the structural strength of the antenna structure and make the antenna structure more beautiful.
The antenna structure of the embodiment of the invention comprises a first antenna radiator 1, a second antenna radiator 2, a tuning circuit 3 and a signal source 4; the first antenna radiator 1 and the second antenna radiator 2 are coupled through a gap, one end, far away from the gap, of the first antenna radiator 1 is grounded, one end, far away from the gap, of the second antenna radiator 2 is grounded, and a feeding point 21 is arranged on the second antenna radiator 2; a first end of the tuning circuit 3 is connected to the feeding point 21, and a second end of the tuning circuit 3 is connected to a first end of the signal source 4; the second end of the signal source 4 is grounded; the antenna structure is used for simultaneously generating a first resonance, a second resonance, a third resonance and a fourth resonance. Therefore, four resonance modes can be excited by fully utilizing one gap of the metal middle frame appearance wireless communication terminal, and at least four frequency bands can be combined on the same antenna structure, such as the combination of the GPS L5, the medium-high frequency and the 5G N79 antennas of the sub6-G wireless communication terminal, so that the resonance effect excited by the antennas is improved. The antenna performance requirement is met, the total number of the antenna and the gaps can be reduced, the structural space occupied by the total feed network (including a radio frequency feeder, a test seat, a matching network, a feed spring structure and the like) is favorably reduced, and meanwhile, the reduction of the number of the gaps is also favorable for improving the structural strength and meeting the overall product requirement of simple appearance.
The embodiment of the invention also provides a wireless communication terminal which comprises the antenna structure.
In this embodiment, the wireless communication terminal may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), or the like.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (11)
1. An antenna structure, comprising: the antenna comprises a first antenna radiating body, a second antenna radiating body, a tuning circuit and a signal source;
the first antenna radiator and the second antenna radiator are coupled through a gap, one end, far away from the gap, of the first antenna radiator is grounded, one end, far away from the gap, of the second antenna radiator is grounded, and a feeding point is arranged on the second antenna radiator;
the first end of the tuning circuit is connected with the feeding point, and the second end of the tuning circuit is connected with the first end of the signal source;
the second end of the signal source is grounded;
the antenna structure is used for simultaneously generating a first resonance, a second resonance, a third resonance and a fourth resonance;
the tuning circuit comprises a capacitance;
the first resonance is excited by a metal arm between the first end of the second antenna radiator and the feed point and the capacitance; the second resonance is excited by a metal arm between the second end of the second antenna radiator and the feed point; the third resonance is excited by the first antenna radiator and the slot; the fourth resonance is excited by a metal arm between the first end of the second antenna radiator and the feed point;
the tuning circuit further comprises a first inductor and a second inductor;
the first end of the capacitor is connected with the feeding point, and the second end of the capacitor is connected with the first end of the first inductor;
the second end of the first inductor is connected with the first end of the signal source;
the first end of the second inductor is connected with the second end of the first inductor, and the second end of the second inductor is grounded.
2. The antenna structure according to claim 1, characterized in that the capacitance is a variable capacitance.
3. The antenna structure of claim 1, wherein the first end is an end of the second antenna radiator that is grounded, and the second end is an end of the second antenna radiator that is proximate to the slot.
4. The antenna structure according to claim 3, characterized in that the length of the metal arm between the first end of the second antenna radiator and the feed point is inversely related to the resonance frequency of the first resonance, and the capacitance value of the capacitor is inversely related to the resonance frequency of the first resonance.
5. An antenna structure according to claim 3, characterized in that the resonance frequency of the first resonance is smaller than the resonance frequency of the second resonance, the resonance frequency of the second resonance is smaller than the resonance frequency of the third resonance, and the resonance frequency of the third resonance is smaller than the resonance frequency of the fourth resonance.
6. The antenna structure according to claim 5, characterized in that the resonance frequency of the first resonance is 1176MHz, the resonance frequency band of the second resonance is 1805MHz to 2170MHz, the resonance frequency band of the third resonance is 2300MHz to 2690MHz, and the resonance frequency band of the fourth resonance is 4800MHz to 5000 MHz.
7. The antenna structure according to claim 6, characterized in that the length of the first antenna radiator is 12-15 mm.
8. The antenna structure according to claim 6, characterized in that the length between the feed point and the first end of the second antenna radiator is 5-10 mm and the length between the feed point and the second end of the second antenna radiator is 16 mm.
9. The antenna structure according to claim 6, characterized in that the capacitance has a magnitude of 0.8pF to 1.5 pF.
10. The antenna structure according to any one of claims 1 to 9, wherein the slot is filled with a non-conductive plastic material.
11. A wireless communication terminal, characterized in that it comprises an antenna structure according to any one of claims 1 to 10.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811636194.9A CN109586036B (en) | 2018-12-29 | 2018-12-29 | Antenna structure and wireless communication terminal |
| PCT/CN2019/125887 WO2020135146A1 (en) | 2018-12-29 | 2019-12-17 | Antenna structure and wireless communication terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811636194.9A CN109586036B (en) | 2018-12-29 | 2018-12-29 | Antenna structure and wireless communication terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109586036A CN109586036A (en) | 2019-04-05 |
| CN109586036B true CN109586036B (en) | 2021-04-06 |
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| CN201811636194.9A Active CN109586036B (en) | 2018-12-29 | 2018-12-29 | Antenna structure and wireless communication terminal |
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| CN109586036B (en) * | 2018-12-29 | 2021-04-06 | 维沃移动通信有限公司 | Antenna structure and wireless communication terminal |
| CN110212303A (en) * | 2019-06-26 | 2019-09-06 | 青岛海信移动通信技术股份有限公司 | Array antenna and terminal |
| CN112310610A (en) * | 2019-08-02 | 2021-02-02 | 青岛海信移动通信技术股份有限公司 | Mobile terminal |
| CN110581357A (en) * | 2019-09-29 | 2019-12-17 | 南昌黑鲨科技有限公司 | Mobile terminal and antenna switching method |
| CN112751162B (en) * | 2019-10-31 | 2022-04-22 | 华为技术有限公司 | Mobile terminal |
| CN112864587B (en) * | 2019-11-12 | 2023-05-05 | 深圳市万普拉斯科技有限公司 | Antenna device and wireless communication device |
| CN112909499B (en) * | 2019-11-19 | 2022-12-13 | 北京小米移动软件有限公司 | Antenna structure and electronic device |
| CN112928445B (en) * | 2019-12-06 | 2023-01-10 | 北京小米移动软件有限公司 | Antenna structure and electronic device |
| CN113394545A (en) * | 2020-03-12 | 2021-09-14 | Oppo广东移动通信有限公司 | Antenna assembly and electronic equipment |
| CN113394550A (en) * | 2020-03-12 | 2021-09-14 | Oppo广东移动通信有限公司 | Antenna assembly and electronic equipment |
| CN111370855B (en) * | 2020-03-20 | 2021-07-20 | 维沃移动通信有限公司 | Antenna structure and electronic equipment |
| CN113451741B (en) * | 2020-03-26 | 2023-01-06 | 华为技术有限公司 | Antenna and terminal equipment |
| CN111244616B (en) * | 2020-03-27 | 2022-01-11 | 维沃移动通信有限公司 | Antenna structure and electronic equipment |
| CN113471664A (en) * | 2020-03-30 | 2021-10-01 | 北京小米移动软件有限公司 | Antenna structure and electronic device |
| CN113708093B (en) * | 2020-05-22 | 2024-02-06 | 北京小米移动软件有限公司 | Antenna structure and electronic equipment |
| CN111585008B (en) * | 2020-05-29 | 2021-08-17 | 上海创功通讯技术有限公司 | Terminal equipment |
| CN116231304A (en) * | 2020-06-05 | 2023-06-06 | 华为技术有限公司 | Electronic equipment |
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| CN113990588A (en) * | 2020-07-27 | 2022-01-28 | 北京小米移动软件有限公司 | Middle frame, terminal and manufacturing method of middle frame |
| CN111834745A (en) * | 2020-07-29 | 2020-10-27 | Oppo广东移动通信有限公司 | Antenna device and electronic equipment |
| CN112003020B (en) * | 2020-08-24 | 2023-04-28 | Oppo广东移动通信有限公司 | Electronic equipment |
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| CN111987431B (en) * | 2020-09-04 | 2023-04-07 | 维沃移动通信有限公司 | Antenna structure and electronic device |
| CN112448162A (en) * | 2020-11-02 | 2021-03-05 | Oppo广东移动通信有限公司 | Antenna assembly and electronic equipment |
| CN112467387B (en) * | 2020-11-20 | 2023-02-28 | Oppo广东移动通信有限公司 | Antenna device and electronic apparatus |
| CN112542694B (en) * | 2020-12-09 | 2023-06-09 | Oppo广东移动通信有限公司 | Antenna assembly and electronic equipment |
| CN112751171B (en) * | 2020-12-24 | 2023-10-20 | 深圳市艾斯龙科技有限公司 | Antenna system and earphone |
| CN112751174B (en) * | 2020-12-29 | 2024-01-02 | Oppo广东移动通信有限公司 | Antenna assembly and electronic equipment |
| CN112886224B (en) * | 2021-01-08 | 2023-08-22 | 维沃移动通信有限公司 | Antenna structure and terminal equipment |
| CN112886228B (en) * | 2021-01-15 | 2023-04-04 | 北京字节跳动网络技术有限公司 | Antenna structure and terminal dorsal scale |
| CN113054417A (en) * | 2021-04-20 | 2021-06-29 | 北京有竹居网络技术有限公司 | Antenna and terminal |
| CN114069237A (en) * | 2021-11-23 | 2022-02-18 | 维沃移动通信有限公司 | Antenna module and electronic equipment |
| CN115224475B (en) * | 2022-08-03 | 2024-04-16 | 荣耀终端有限公司 | Electronic equipment |
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| TWI732931B (en) * | 2016-09-29 | 2021-07-11 | 仁寶電腦工業股份有限公司 | Antenna structure |
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| CN109586036B (en) * | 2018-12-29 | 2021-04-06 | 维沃移动通信有限公司 | Antenna structure and wireless communication terminal |
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| CN109586036A (en) | 2019-04-05 |
| WO2020135146A1 (en) | 2020-07-02 |
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